Re: John Deere 60 question
Unless I have my models mixed up, the fan is attached to a shaft that runs back toward the transmission, and is driven off of the governor there. Unless the fan blade itself is loose, if you can grab ahold of the fan blade and turn the blade and you can watch the shaft move, then your gears need re-shimmed. I was told by a john deere restorer that if the play is more than 20 thousandths, it needs tightened up. The gears that drive it are back over the engine block, not up by the fan blade. Hope that cleared things up a little bit. I could be complicating things and your fan blade itself could be loose and not play in the gears.
Let me know